Here a little update to jEnesisDS, Lordus’ Genesis/MegaDrive emulator for the Nintendo DS.

Changes:

– Fixed bug in Z80 core, preventing some games from having sound (Wonderboy, etc.).
– Fixed bug in 68000 optimization, that could make some games hang (Bonanza Brothers, etc.).
– Changed sound handling and doubled sample rate for PCM sound, resulting in slightly better sound quality.
– HW renderer partially rewritten, many glitches should be gone, some are still there (and will probably not be easy to fix ever)
– Sprite rendering completely rewritten in ASM. Should be faster and fix most of the sprite issues.
– Implemented mid frame palette updates (water effects in Sonic games, Castlevania, etc.). Note, that this just works, if a game is constantly fast enough, so slowdowns can still cause colors to flicker.
– Many little optimizations in memory handling and the CPU cores. Should reduce slowdowns.
– Added option for sprite masking (Landstalker etc.). It is not 100% emulated, just faked to be enough for most games using it (disable it, if sprites are missing, that should be there).
– Added option to change between 3- and 6-Button pad (just works, if the option is applied BEFORE loading a game). When 6-Button pad is disabled, L+R can be used to move the visible screen area, X to center it.
– Added sound state to the savestates, so that the correct tracks should play now when a state is loaded. Savestates are still not 100% reliable and loading old states can potentially cause problems.

Keep us awake and going :)

Maintaining PDRoms is hard work and very time consuming. News don’t write themselves and also need to be found first. Furthermore donations will help us to pay the server and the domain. Additionally it pays the junk food consumed, while posting news and/or updating the files :)